Beckman SARS-CoV-2 IgM antibody test
October 2020—Beckman Coulter launched its Access SARS-CoV-2 Immunoglobulin M assay. The IgM antibody test demonstrated 99.9 percent specificity against 1,400 negative samples, the company reports, and 98.3 percent sensitivity at 15 to 30 days post-symptom onset. The test measures antibodies to the receptor binding domain of the spike protein, which the SARS-CoV-2 virus uses to bind to a human cell receptor.